Toronto feasibility, computed

Toronto site feasibility in one afternoon.

Decision-grade screening in minutes, not a $10k two-week consult — click a parcel for zoning-backed massing, a live pro forma, and a lender-facing report.

Run a Toronto site View sample report

Built for Toronto developers, architects, planners, and infill investors.

BUILT ON OFFICIAL, AUDITABLE DATA  — City of Toronto Open Data · By-law 569-2013 · Altus 2026 costs · not black-box AI

Parcel pick → massing → pro forma → investor-ready report
LIVE DEMO

Underwrites against live, official data — not black-box AI

City of Toronto Open Data26,000+ live applications Zoning By-law 569-2013deterministic rules Altus 2026 Cost Guidehard costs Toronto Tall Building Guidelinesmassing checks Development Charges Bylawindexed rates Mapbox Parcelslot fabric Bylaw 89-2022garden suites Ontario Energy Boardutilities Mid-Rise Design Guidelines 2024shapes the massing engine City of Toronto Open Data26,000+ live applications Zoning By-law 569-2013deterministic rules Altus 2026 Cost Guidehard costs Toronto Tall Building Guidelinesmassing checks Development Charges Bylawindexed rates Mapbox Parcelslot fabric Bylaw 89-2022garden suites Ontario Energy Boardutilities Mid-Rise Design Guidelines 2024shapes the massing engine

Reports cite these sources for every key input — including live filings from Toronto's most active developers.

How it works

From parcel to pro forma,
one continuous pipeline.

Scroll the workflow. Every step is auditable, every number sourced — and the whole run takes minutes, not weeks.

  1. Site intelligence

    Pick a parcel

    Search any Toronto address or click a lot on the satellite map. SiteYield pulls the cadastral geometry, zoning code, exception schedules, overlays, and nearby planning context in one click.

  2. Rules engine

    Zoning, verified

    By-law 569-2013, Tall Building Guidelines, angular planes, MTSA context, and 300+ live comparable applications within 1 km — every constraint cited to its source, not a black box.

  3. Design studio

    Mass it — generated or hand-built

    Press Generate for the highest-value compliant scheme, or design your own like a game: stamp, draw, drag edges, pull the roof, split a podium. Live zoning warnings keep every move honest.

  4. Underwriting

    A pro forma that keeps up

    Hard costs, DCs, financing, unit pricing, DCF, and Monte Carlo — recalculated live as the building changes shape. Move a wall, watch the IRR.

  5. Deliverables

    A report someone can approve

    A comprehensive, source-cited feasibility package — executive summary, comparables, planning path, risk register — ready for your lender or IC the same afternoon.

    Run a Toronto siteView sample report

See it in action

One tool, every typology.

From a tower-on-podium to a row of freehold multiplexes — watch the building rise, the density resolve, and the returns land. Illustrative figures from real Toronto site parameters.

High-rise tower
Tower on podium
42 st
388
11.8×
17.4%
Mid-rise on an Avenue
Mixed-use mid-rise
11 st
94
4.2×
16.1%
Stacked rental / low-rise
Stacked rental multiplex
4 st
12
2.0×
5.5%
Multiplex / low-rise
Freehold multiplex row
14
3 st
$865/sf
21%
By the numbers
From a three-week study to a five-minute answer.
The old way
With SiteYield
3+ wkto hand-build a single feasibility study
<5 minfrom address to a costed, defensible massing
~18 motypical Toronto rezoning timeline — modelled up front, not discovered late
100%Toronto parcels, zoning & overlays built in
5disconnected tools — Excel, GIS, CAD, zoning PDFs, comps
IC-stylecomprehensive report — pro forma, DCF, waterfall, risk
THE ONE BUTTON · Highest & Best Use, computed

One click. The highest-value building
your lot can support.

Press Generate Optimal Massing and SiteYield reads your lot polygon, your zoning code, every applicable Toronto Tall Building Design Guideline, and the 362 most recent comparable approvals within 1 km — then returns a high-IRR option, benchmarked against recent approved precedent within 1 km to support a defensible planning case.

🗺
Your lot polygon
Real cadastral, not a bounding box.
📐
Your zoning code
By-law 569-2013 + every exception schedule.
📏
Tall Building Guidelines
12.5 m side setback, 25 m tower separation, angular planes.
📍
362 live comparables
Approved precedent within 1 km, weighted by recency + status.

Everything else on this page — the custom geometry editor, the conservative, balanced, and aggressive approval paths, the live pro forma, the shadow study, the comprehensive report — exists to refine what this button gives you. Most users stop after one click.

What it does

The whole feasibility loop —
in one workflow.

Site intelligence, massing, underwriting, and the deliverables a lender or partner actually reads — grouped by the order you use them. No juggling Excel, Mapbox, AutoCAD, and a planner’s email chain.

A Site intelligence

Toronto parcel picker + zoning

Click any lot on the satellite map. SiteYield pulls the parcel geometry, zoning code, exception schedules, MTSA / PMTSA proximity, heritage adjacency, and transit distance. Multi-parcel assembly merge.

Infrastructure constraint scan

Live capacity checks against City of Toronto and Ontario Energy Board open data — water, sanitary, stormwater, and electrical headroom at your address. Surfaces constraints before you commit.

Live development comparables

300+ active applications within 1 km from Toronto’s open data — storeys, FSI, status, and decision dates. Sourced precedent for your rezoning narrative.

B Massing and design

Freeform polygon drawing

Trace any building footprint — L, U, chamfered, notched. Snaps to lot edges within 3 m. Drag any vertex to reshape.

Multi-volume podium + tower

Stack a wide podium and a stepped-back tower with per-edge step-back control to meet Toronto’s tower setback and separation requirements.

Production-grade materials

Curtain wall, brick podium, balcony stacks, mullion grid, rooftop amenity and green roof, mechanical penthouse — all parameter-driven.

Shadow study and time animation

Animate sun position by date and time, with equinox / solstice presets, cast onto neighbouring buildings and heritage districts to check Tall Building Guideline shadow windows.

C Underwriting

Live pro forma

Hard cost, soft cost, DC / CBC, parkland, financing, and sales velocity in one model. Move an assumption and every downstream number recalculates instantly.

IRR / DCF / Monte Carlo sensitivity

Full 10-year DCF, tornado-chart sensitivity, and a Monte Carlo risk distribution — so you see the range of outcomes, not a single point estimate.

Unit pricing by floor, exposure, view, and corner

Per-unit pricing built from a base rate × floor, exposure, view, and corner premiums — closer to how units actually sell than a flat $/sq ft.

D Deliverables

Required applications estimator

Reads your massing and estimates the likely approvals path — OPA / ZBA / SPA / Minor Variance — with Planning Act citations and comparable precedent. An estimate to plan around, not a legal opinion.

Comprehensive PDF / PPTX / CSV export

Bound feasibility report (Executive Summary → Recommendations), PowerPoint for IC memos, and CSV for the analysts.

Consultant and lender handoff package

Shareable view-only links plus .obj / .mtl 3D export into SketchUp, Revit, or Rhino — so your architect, planner, and lender start from your model.

Built for the deal team

One model everyone at the table
can actually trust.

The same sourced, auditable feasibility package — read four different ways. No more reconciling the broker’s teaser, the developer’s spreadsheet, and the planner’s memo.

Developers

Screen more sites, faster. Go from listing to a defensible go / no-go — massing, pro forma, approvals path — before you spend on consultants.

Land brokers

List the upside, not just the lot. Package a parcel with zoning-backed massing, FSI, and value support a sophisticated buyer can verify.

Planners

Arrive at pre-consultation with massing already tested against 569-2013, angular planes, and sourced precedent within 1 km.

Lenders

Stress the sponsor’s numbers against sourced costs, live comparables, and a full sensitivity range — transparent assumptions, cited inputs.

$10k consultant study
Free to start
Run the screening model yourself — pay only when the deal is worth exporting.
2-week turnaround
One afternoon
Parcel pick to lender-facing feasibility package in a single sitting.
One static scenario
3 postures
Conservative, balanced, and aggressive approval paths — compared side-by-side.

Comparisons reflect typical Toronto consultant feasibility pricing and timelines — not measured customer stats. We’re early; we’ll publish real numbers when we’ve earned them.

About us

Built by a developer,
for developers.

Pre-development is the ugliest part of building. The math is opaque, the data is fragmented, the tools are 1990s. Every developer's "feasibility model" is a personal Excel sheet built over a decade — undocumented, unsharable, untrustable.

SiteYield.ai exists because someone had to write the calculator that actually makes sense. One that respects the rigor of how developers, planners, and lenders really think — and one that produces output you'd actually send to your IC.

We're focused on Toronto first because Toronto is where we know the by-law. Vancouver, Ottawa, and the GTA are next. Every city we add deepens the same engine: real zoning data, real comparables, real construction economics.

1click
Parcel pick → fully populated 3D massing
~30sec
Lot to first massing alternatives
3postures
Conservative · Balanced · Aggressive
For Toronto homeowners · Free

Got a backyard? See if a garden suite fits.

Same engine, homeowner-friendly. Draw your lot and SiteYield Home checks setbacks, footprint, and how big a suite you can build — then hands you a feasibility PDF with a cost band and permit timeline. Free for Toronto homeowners.

3D envelope & viewerFeasibility PDFCost band & permit timelineToronto contractor directory
Try SiteYield Home — free →
Pricing · One subscription, both tools

Transparent, project-aware,
no per-seat tax.

See it live first. Upgrade when the deal is worth it. Every paid plan unlocks both SiteYield and SiteYield Home — one account, two tools.

Early access pricing — locked for founding users.
Studio
CA$349/mo
For multi-person firms running parallel developments
  • Everything in Pro (both tools), plus:
  • SiteYield Finder — citywide deal sourcing + ranked map
  • Site Assessment — instant go / no-go on any parcel
  • Monte Carlo risk + absorption modelling
  • Multi-user — 5 seats included
  • Shared library, comment history & custom templates
  • Priority support + onboarding call
Get started →
SiteYield Home For homeowners
Free
For Toronto homeowners checking garden-suite feasibility on their own backyard
  • Real envelope from your actual lot
  • SiteYield Home envelope tool + 3D viewer
  • Downloadable feasibility PDF
  • Cost band + permit timeline
  • Toronto contractor directory
Try SiteYield Home →

Every plan unlocks both SiteYield and SiteYield Home. One account, two tools. See the full feature list & comparison →

FAQ

Questions buyers ask first.

How accurate is the pro forma?

As accurate as the assumptions you give it. Costs draw on the Altus 2026 Canadian Cost Guide, development charges on the current City of Toronto schedule (with Bill 23 rental treatment), and financing on current rates — all of which you can override. It runs full DCF, sensitivity, and Monte Carlo so you see a range of outcomes, not a single number. Treat it as a fast, defensible screening model, not a final appraisal.

What data does SiteYield use?

Parcel geometry and zoning from the City of Toronto, By-law 569-2013 and its exception schedules, planning overlays, nearby development applications from Toronto’s open data, and the Tall Building Design Guidelines. Cost and financing benchmarks come from published industry sources. Every input is shown with its source.

Can I override the assumptions?

Yes — every cost, rent, sale price, financing term, and timeline assumption is editable. The defaults are a starting point; the model is yours to tune to your deal.

Does SiteYield replace my architect or planner?

No. It compresses the weeks between “I found a site” and “I know whether to pursue it.” Your architect still designs the building, your planner still runs the approvals, and your lawyer still gives the legal opinion. SiteYield gets you to a defensible go / no-go before you spend on consultants.

What cities are supported?

Toronto today — that’s where the by-law data is modelled in depth. The GTA, Ottawa, and Vancouver are on the roadmap. The engine is jurisdiction-agnostic; per-city by-law data is what takes time. Tell us where you build and we’ll add you to the list.

Is my project data private?

Your projects stay in your browser by default. Server-side save for cross-device access is opt-in and encrypted. We don’t train models on your projects, and we don’t sell your data.

Can I export to PDF, PowerPoint, CSV, SketchUp, Rhino, Revit, or other formats?

Yes — a comprehensive bound PDF, PPTX for IC memos, CSV for analysts, and .obj / .mtl 3D export that opens in SketchUp, Revit, or Rhino, plus shareable view-only links.

Is this suitable for lenders or investment-committee review?

That’s what it’s built for. The report is structured for IC and lender review — executive summary, pro forma, comparables, planning pathway, and a risk register — with key inputs cited to a source or an assumption you set. It supports the decision; it doesn’t replace formal appraisal or legal due diligence.

Stop rebuilding the same site from scratch.
Start with a defensible feasibility package.

See it live, no signup required — the demo runs massing, a pro forma, comparables, and a lender-facing report across all three asset classes.